Liquid level controller and soil test instrument

Details Liquid level controller and soil test instrument Liquid level controller and soil test instrument

1976-03-05

1978-02-07

Queisser, Richard C.

Measuring and testing

With fluid pressure

Porosity or permeability

73291, G01F 2310, G01N 1508

Patent

active

040720446

ABSTRACT:
A portable, automatic liquid level monitoring and recording instrument is disclosed for use in measuring the capacity of soils to absorb water. A self-contained power source, timer and vertically biasable recording probe are housed as a cylindrical package disposed for placement in a shallow bore hold and connected to a reserve water supply. The probe, carrying an ink filled stylus, scribes a graph lining the inside of the cylinder during excursions initiated by timer actuation, the direction of probe traverse being reversed by completion of a circuit when the probe contacts water. Water is replenished to the borehole to datum level automatically after completion of the downward traverse of the probe.

REFERENCES:
patent: 2540096 (1951-02-01), Bull
patent: 3548635 (1970-12-01), Hutchinson et al.
patent: 3892126 (1975-07-01), Curtin
patent: 3945247 (1976-03-01), Anderson

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